I have some radio buttons that I'm building a custom control template for. Image of the buttons:
In the control template, each radio button will have a textblock with its name and another textblock below it to indicate if it's unavailable.
I want the "Unavailable" text to be visible ONLY when the button is NOT enabled. When the radio button is ENABLED, the "Unavailable" textblock should be collapsed.
Here is the simplified view.xaml for the buttons:
<RadioButton Name="one"
IsEnabled="{Binding One_isAvailable}"
Style="{StaticResource RadioButtonTheme}" />
<RadioButton Name="two"
IsEnabled="{Binding Two_isAvailable}"
Style="{StaticResource RadioButtonTheme}" />
<RadioButton Name="three"
IsEnabled="{Binding Three_isAvailable}"
Style="{StaticResource RadioButtonTheme}"/>
Here is the simplified version of the styling I have so far (RadioButtonTheme.xaml):
<ResourceDictionary>
<Style BasedOn="{StaticResource {x:Type ToggleButton}}"
TargetType="{x:Type RadioButton}"
x:Key="RadioButtonTheme">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Border CornerRadius="7">
<StackPanel VerticalAlignment="Center">
<TextBlock HorizontalAlignment="Center"
Text="{TemplateBinding Property=Name}"
Foreground="{TemplateBinding Property=Foreground}">
</TextBlock>
<TextBlock Name="UnavailableTextBlock"
HorizontalAlignment="Center"
Text="Unavailable"
FontSize="14"
FontStyle="Italic"
Foreground="{TemplateBinding Property=Foreground}">
</TextBlock>
</StackPanel>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
So I've tried setting a couple things:
I set a visiblitity property on the radio button on the view.xaml. I then binded that visibility to the "UnavailableTextBlock" in the radiobuttontheme.xaml and set the rest of the template visiblity to "Visible." I thought that I can leave the template visible except for one element of it. I now don't think that's possible.
I tried directly binding the "UnavailableTextBlock" to the IsEnabled property of the radiobutton, and ran it through a BoolToVisiblityConverter.
<TextBlock Name="UnavailableTextBlock"
Visibility="{TemplateBinding Property=IsEnabled, Converter={StaticResource BoolToVisConverter}}">
However, I can't seem to get my converter to work inside of the ResourceDictionary. The program will crash with the error: "Cannot find resource named 'BoolToVisConverter'. Resource names are case sensitive"
I have this converter working across my other xaml files since I added it to my <Application.Resources> in the app.xaml. Do I need to link my Resource dictionary to the converter? How do I do that? <ResourceDictionary.Resources> didn't seem to work for me.
I tried adding a datatrigger to the "UnavailableTextBlock" as below:
<TextBlock Name="UnavailableTextBlock"....>
<TextBlock.Style>
<Style TargetType="TextBlock">
<Setter Property="Visibility" Value="Collapsed"/>
<Style.Triggers>
<DataTrigger Binding="{TemplateBinding Property=IsEnabled}" Value="false">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
</Style.Triggers>
</Style>
</TextBlock.Style>
</TextBlock>
However, I get an error saying: '"IsEnabled" member is not valid because it does not have a qualifying type name.'
I'm guessing that it's referencing the IsEnabled property of the TextBlock and not of the radio button? Although I'm not too sure. I'm still learning WPF.
Thanks for all your help in advance!
If I understand correctly what you want to implement, then you need to use the control template trigger.
<Style BasedOn="{StaticResource {x:Type ToggleButton}}"
TargetType="{x:Type RadioButton}"
x:Key="RadioButtonTheme">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="RadioButton">
<Border CornerRadius="7">
<StackPanel VerticalAlignment="Center">
<TextBlock HorizontalAlignment="Center"
Text="{TemplateBinding Property=Name}"
Foreground="{TemplateBinding Property=Foreground}">
</TextBlock>
<TextBlock Name="UnavailableTextBlock"
HorizontalAlignment="Center"
Text="Unavailable"
FontSize="14"
FontStyle="Italic"
Foreground="{TemplateBinding Property=Foreground}">
</TextBlock>
</StackPanel>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter TargetName="UnavailableTextBlock" Property="Visibility" Value="Hidden"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
I have a Button Style with a Template containing a ContentPresenter, in which I am attempting to bind the Fill of a Path to the Foreground of a button:
<!-- This is inside the template of a button style -->
<ContentPresenter>
<ContentPresenter.Resources>
<Style TargetType="{x:Type Path}">
<Setter Property="Fill" Value="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType=Button}}"/>
</Style>
</ContentPresenter.Resources>
</ContentPresenter>
I also have a Path with no Fill set, that I can reference in the button as the content, like so:
<Button Style="{DynamicResource MyButtonStyle}" Content="{DynamicResource PathIcon}" Foreground="Blue"/>
I would expect the Path inside the button to be blue, but it isn't... it doesn't grab the foreground from the button.
How can I get the Path to bind to the color of the button?
Thank you!
P.S.:
If I put a hardcoded color in the Value (i.e. Value="Red"), the Path inside the button is red... so I know that works...
<ContentPresenter>
<ContentPresenter.Resources>
<Style TargetType="{x:Type Path}">
<Setter Property="Fill" Value="Red"/>
</Style>
</ContentPresenter.Resources>
</ContentPresenter>
Edit:
Here is the complete Style and ControlTemplate:
<Style x:Key="Button_Style" TargetType="{x:Type Button}">
<Setter Property="Foreground" Value="{StaticResource White_Brush}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Grid x:Name="grid" Background="Transparent">
<ContentPresenter>
<ContentPresenter.Resources>
<Style TargetType="{x:Type Path}">
<Setter Property="Fill" Value="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType=Button}}"/>
</Style>
</ContentPresenter.Resources>
</ContentPresenter>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<!-- Should affect Text as well as Paths in the Content property of the button! -->
<Setter Property="Foreground" Value="{StaticResource Black_Brush}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Okay, let's order:
it doesn't grab the foreground from the button.
In styles this construction:
RelativeSource={RelativeSource AncestorType=Button}
will not work, because the Style is just the collection of setters, he does not know about control, are there, specifically about the content of the visual tree. Because RelativeSource should refer to the items above in the visual tree. For this purpose, usually using DataTemplate or ControlTemplate.
If I put a hardcoded color in the Value (i.e. Value="Red")
Yes, in this case, will be working, and always better to create the design of the form:
<SolidColorBrush x:Key="MyButtonColor" Color="Blue" />
And use it for control, like Button:
<Button Background="{StaticResource MyButtonColor}" ... />
and in Style or elsewhere:
<Setter Property="Fill" Value="{StaticResource MyButtonColor}" />
That is, it is better not to depend on the element parameters (background color, etc.) located in a visual tree, because it can:
May move to another panel (Grid, StackPanel) or UserControl
May leave from the project
And brushes in the as resources will always be in one place, changing them in this place, all the elements of their pick up. Also colors can be stored in a special data model that does not depend on the specific technical implementations (resources, variables) in which the data can come from an external source, such as the project/config settings.
If possible, it is better to avoid the use of dynamic resources due to unnecessary use of system perfomance (and in some cases memory leaks), in your cases they are not needed.
Dynamic resources are usually explicitly defined for SolidColorBrush and another species brushes, because by default they are frozen, and they not recommended changed because of the above mentioned reasons (memory leaks). More information can be found here:
Freezable Objects Overview on MSDN
Edit
As I understand it, you want to make universal Style for Button to make the contents of Path or Text (in the case of simultaneous use will be easier). As I have already mentioned above, RelativeSource should be around ControlTemplate, therefore, the Path will be in the Grid with the ContentPresenter.
To style knew, which is provided for the text or for the path, to the Tag (optional property) indicates two properties: OnlyText or OnlyPath.
To set the data for the Path, I've created a attached dependency property, and prescribed it in the ControlTemplate.
Below is a complete example:
XAML
<Window x:Class="ButtonPathHelp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:ButtonPathHelp"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
WindowStartupLocation="CenterScreen"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<SolidColorBrush x:Key="Green_Brush" Color="Green" />
<SolidColorBrush x:Key="Black_Brush" Color="Black" />
<Style x:Key="Button_Style" TargetType="{x:Type Button}">
<Setter Property="Foreground" Value="{StaticResource Green_Brush}" />
<Setter Property="HorizontalAlignment" Value="Center" />
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Grid x:Name="grid">
<ContentPresenter x:Name="MyContent"
Content="{TemplateBinding Content}"
HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
VerticalAlignment="{TemplateBinding VerticalAlignment}" />
<Path x:Name="MyPath"
SnapsToDevicePixels="True"
Width="20"
Height="18"
Stretch="Fill"
Fill="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type Button}}}"
Data="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=(local:MyDependencyClass.DataForPath)}" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Foreground" Value="{StaticResource Black_Brush}"/>
</Trigger>
<Trigger Property="Tag" Value="OnlyText">
<Setter TargetName="MyPath" Property="Visibility" Value="Collapsed" />
<Setter TargetName="MyContent" Property="Visibility" Value="Visible" />
</Trigger>
<Trigger Property="Tag" Value="OnlyPath">
<Setter TargetName="MyPath" Property="Visibility" Value="Visible" />
<Setter TargetName="MyContent" Property="Visibility" Value="Collapsed" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<WrapPanel>
<WrapPanel.Resources>
<sys:String x:Key="Save">
F1 M 20.5833,20.5833L 55.4167,20.5833L 55.4167,55.4167L 45.9167,55.4167L 45.9167,44.3333L 30.0833,44.3333L 30.0833,
55.4167L 20.5833,55.4167L 20.5833,20.5833 Z M 33.25,55.4167L 33.25,50.6667L 39.5833,50.6667L 39.5833,55.4167L 33.25,
55.4167 Z M 26.9167,23.75L 26.9167,33.25L 49.0833,33.25L 49.0833,23.75L 26.9167,23.75 Z
</sys:String>
<sys:String x:Key="Search">
F1 M 23.4454,49.2637L 31.7739,41.1598C 30.6986,39.2983 30.4792,37.1377 30.4792,34.8333C 30.4792,27.8377 35.7544,
22.1667 42.75,22.1667C 49.7456,22.1667 55.4167,27.8377 55.4167,34.8333C 55.4167,41.8289 49.7456,47.1042 42.75,
47.1042C 40.5639,47.1042 38.5072,46.9462 36.7125,45.9713L 28.3196,54.1379C 27.0829,55.3746 24.6821,55.3746 23.4454,
54.1379C 22.2088,52.9013 22.2088,50.5004 23.4454,49.2637 Z M 42.75,26.9167C 38.3777,26.9167 34.8333,30.4611 34.8333,
34.8333C 34.8333,39.2056 38.3777,42.75 42.75,42.75C 47.1222,42.75 50.6667,39.2056 50.6667,34.8333C 50.6667,
30.4611 47.1222,26.9167 42.75,26.9167 Z
</sys:String>
</WrapPanel.Resources>
<Button Name="SaveButton"
Style="{StaticResource Button_Style}"
Tag="OnlyPath"
local:MyDependencyClass.DataForPath="{StaticResource Save}"
Margin="10" />
<Button Name="JustText"
Style="{StaticResource Button_Style}"
Tag="OnlyText"
Content="Just Text"
Margin="10" />
<Button Name="SearchButton"
Style="{StaticResource Button_Style}"
Tag="OnlyPath"
local:MyDependencyClass.DataForPath="{StaticResource Search}"
Margin="10" />
</WrapPanel>
</Window>
Code behind
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
}
public class MyDependencyClass : DependencyObject
{
#region IsCheckedOnDataProperty
public static readonly DependencyProperty DataForPathProperty;
public static void SetDataForPath(DependencyObject DepObject, string value)
{
DepObject.SetValue(DataForPathProperty, value);
}
public static string GetDataForPath(DependencyObject DepObject)
{
return (string)DepObject.GetValue(DataForPathProperty);
}
#endregion
static MyDependencyClass()
{
PropertyMetadata MyPropertyMetadata = new PropertyMetadata(String.Empty);
DataForPathProperty = DependencyProperty.RegisterAttached("DataForPath",
typeof(string),
typeof(MyDependencyClass),
MyPropertyMetadata);
}
}
Note: In the Style I have not used TemplateBinding for attached property, because TemplateBinding doesn’t work outside a template or outside its VisualTree property, so you can’t even use TemplateBinding inside a template’s trigger. Therefore, we must use the construction {RelativeSource TemplatedParent} and a Path equal to the dependency property whose value you want to retrieve.
Output
To download the entire example please follow this link.
I stumbled across simillar problem but was wondering how to get to the 'Foreground Colour' of the Button in its DISABLED state (to have correct colour of my drawing). Here is a finally simple sollution. No templates, No styles, no code, nothing at all. Just the right relative binding :-) :
<StackPanel Orientation="Horizontal">
<Button Height="22" IsEnabled="False">
<Polygon Points="4,0 4,5 5,5 2.5,10 0,5 1,5 1,0 "
Fill="{Binding (TextElement.Foreground), RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ContentPresenter}}}">
<Polygon.LayoutTransform>
<RotateTransform Angle="90"></RotateTransform>
</Polygon.LayoutTransform>
</Polygon>
</Button>
<Button Height="22" IsEnabled="True">
<Polygon Points="4,0 4,5 5,5 2.5,10 0,5 1,5 1,0 "
Fill="{Binding (TextElement.Foreground), RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ContentPresenter}}}">
<Polygon.LayoutTransform>
<RotateTransform Angle="180"></RotateTransform>
</Polygon.LayoutTransform>
</Polygon>
</Button>
</StackPanel>
I want to add conditionnal formatting (just font color) to the textbox part of a combobox. According to MSDN, it's the "PART_EditableTextBox" element. A quick search on SO got me started but I now face a problem: it overrides the whole template. According to this SO answer, I can use "BasedOn" to override only specific properties but I've no idea how/where to use it.
This is my current template:
<ControlTemplate x:Key="MyComboBoxTextBox" TargetType="ComboBox" <!--Here?--> >
<TextBox x:Name="PART_EditableTextBox" <!--Maybe Here?-->>
<TextBox.Style>
<Style TargetType="TextBox">
<Style.Triggers>
<Trigger Property="Text" Value="MAL">
<Setter Property="Foreground" Value="DarkOrange"></Setter>
</Trigger>
</Style.Triggers>
</Style>
</TextBox.Style>
</TextBox>
</ControlTemplate>
It works, I can still type in valid values and "MAL" does make the text orange but there's no dropdown anymore.
On MSDN, I found the following:
<TextBox x:Name="PART_EditableTextBox"
Style="{x:Null}"
Template="{StaticResource ComboBoxTextBox}"
HorizontalAlignment="Left"
VerticalAlignment="Bottom"
Margin="3,3,23,3"
Focusable="True"
Background="Transparent"
Visibility="Hidden"
IsReadOnly="{TemplateBinding IsReadOnly}" />
I suppose I should base my template on this "ComboBoxTextBox" but I don't know how to reference it. Do I really need to copy the whole template or is there a way to override a specific property?
EDIT:
On the same MSDN page comboboxTextBox is defined as
<ControlTemplate x:Key="ComboBoxTextBox"
TargetType="{x:Type TextBox}">
<Border x:Name="PART_ContentHost"
Focusable="False"
Background="{TemplateBinding Background}" />
</ControlTemplate>
I don't see how overriding this template removes the dropdown list.
Ok I think I got really confused after reading all of your code and having a really looooooong day at work, I totally missed the point of your question.... which is
I want to add conditionnal formatting (just font color) to the textbox part of a combobox
Well if that's all you want to do, then it's really easy with just a simple style trigger.
I can achieve that with this xaml.
<ComboBox HorizontalAlignment="Center" VerticalAlignment="Center">
<ComboBox.Resources>
<Style TargetType="ComboBox">
<Style.Triggers>
<Trigger Property="Text" Value="MAL">
<Setter Property="Foreground" Value="DarkOrange" />
</Trigger>
</Style.Triggers>
</Style>
</ComboBox.Resources>
<ComboBoxItem>MAL</ComboBoxItem>
<ComboBoxItem>1</ComboBoxItem>
<ComboBoxItem>2</ComboBoxItem>
<ComboBoxItem>3</ComboBoxItem>
</ComboBox>
Hope this helps!
How to display text on an image, so it should always visible (because the image colors are mixed and unpredictable)?
I thought about two options:
Making the text border in white while the text itself will be black
Having the text displayed negatively to the picture
The 1st option would be preferred since it looks more solid.
Embedding the text is simple:
<Grid>
<Image Source="{Binding ImageLink}" Width="110" />
<TextBlock Text="{Binding Description}"
HorizontalAlignment="Center"
VerticalAlignment="Center" />
</Grid>
Update on answer:
Sounds like a great idea except it doesn't work.
I tried your code, and here are the results:
The left image is when I set the Color property to White and ShadowDepth to 10.
I did this and it helps:
<Style x:Key="AnnotationStyle" TargetType="TextBlock">
<Setter Property="Background" Value="#70FFFFFF" />
<Setter Property="FontWeight" Value="Bold" />
<Setter Property="HorizontalAlignment" Value="Center"/>
<Setter Property="VerticalAlignment" Value="Center"/>
<Setter Property="TextAlignment" Value="Center"/>
<Setter Property="TextWrapping" Value="Wrap"/>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="#CCFFFFFF" />
</Trigger>
</Style.Triggers>
</Style>
....
<TextBlock ... Style="{StaticResource AnnotationStyle}"/>
Here is what it looks like:
The best way to make the text more highlighted or contrasted is by using any effect, particularly the shader effects.
Microsoft is also make bitmap effect obsoleted since .NET 3.5 SP1, therefore your best bet is using any shader effect or create your own.
For example (from Karl Shifflett), you can use DropShadowEffect to "outline" your text but set the ShadowDepth to 0:
<Grid>
<Image Source="{Binding ImageLink}" Width="110" />
<TextBlock Text="{Binding Description}"
HorizontalAlignment="Center"
VerticalAlignment="Center">
<TextBlock.Effect>
<DropShadowEffect ShadowDepth="0" Color="Blue" BlurRadius="10" />
</TextBlock.Effect>
</TextBlock>
</Grid>
For more sample, you can google WPF effects.
UPDATE: You can also turn off antialiasing on text by using attached property of TextOptions.TextRenderingMode and set it to "Aliased", or you can also use TextOptions.TextFormattingMode and set to "Display".
Try and compare this and see if it will fit your needs:
<StackPanel>
<TextBlock>
Hello World ... Ideal text formatting
</TextBlock>
<TextBlock TextOptions.TextFormattingMode="Display">
Hello World ... Display text formatting
</TextBlock>
</StackPanel>
Hope this helps.